@article{10_4064_fm_78_3_193_203,
     author = {J. Baumgartner and A. Hajnal},
     title = {A proof (involving {Martin's} axiom) of a partition relation},
     journal = {Fundamenta Mathematicae},
     pages = {193--203},
     publisher = {mathdoc},
     volume = {78},
     number = {3},
     year = {1973},
     doi = {10.4064/fm-78-3-193-203},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-78-3-193-203/}
}